tires whats the best all road tires for rg dual cab colorado

I'll 2nd this one but i have LT275/70/17's Bridgestone Dueller A/T 697's i done the same trip in june except for the Bungles. Very happy with them.

YES the LT 697's are the go - just had a new set fitted to Patrol. Very happy with them. Very deep tread (about 13mm I think). Very robust tyre and quiet on the bitumen as well.

BTW I run mine at 26-28PSI on the dirt and 40-45PSI on the black top. Not sure what pressures those who have reported troubles are running in rough going and whether they keep a constant look out for and travel at a speed to be able to take evasive action when encountering sharp rocks sticking upwards, fist size gibbers protruding through through the road surface, dips where you will 'bottom out' heavily if travelling too fast, etc, etc. I came across plenty barrelling along the GRR and saw plenty stopped changing tyres, especially on caravans. The roadside is littered with shredded tyres, especially the northern half.
My personal preference is for a brand of tyre that is supported and available at most major regional centres. I do not support the 'exotic' brands or those imported from Europe or those that guarantee certain mileage will be achieved. I am not saying none of them are any good, just my personal preference that's all. Having just spent 5 weeks in the Kimberley's and lived and worked here previously, you won't see the 'real' people who live here, station owners, tour operators, aboriginal communities and the like using the fancy fad brands or the cheap Korean and Chinese imports, just the rock solid brand that have been around forever such as BFG and B/Stone and maybe one or two others.

Not disagreeing with you but it is hard to imagine how a one increment increase in aspect ratio, which only equates to a 12mm increase in tyre radius, would mean the difference to being able to tug your van easily or with difficulty unless of course the towing capacity was already borderline with the factory fitted tyres. When you think about it 12mm is only the difference in size between new and worn tyres.
By way of example the difference in radius between my 285/70's and factory 275/65's is 20mm and I have not noticed any power difference at all and lets face it, the ZD30 is not renowned for its neck snapping power:-) The speedo is out 8kph but I intend to change the plastic gear in the speedo pulse generator at the gearbox.

Hi, got to admit the van is probably near max's limit. On the trip fuel was 15.6 lt / 100k's after having chipped reset and fuel for rest of trip was 13.8lt. On previous trip with the van and standard tyres much the same terrain fuel was bit over 14 but I could feel the car working harder this time (can't wait to put off road camper on next year and head to cape York I think that will test tyres, suspension, and chip.
Cheers